Wax-thread shoe-sewing machine.



T. H. SEELY. wjnx nimo sncf sswma MAcHmE. APPLICATION FIL ED IIOV 2l. |916.

Patented Jan.15, 1918.

40 Y preferred form, Figure 1 is a view in side January 29,1914.

original Aypuoamn ma January 29, 1914, serial no. 815,127. Divided and this application meaniinittk 27,1916. serial no. 133,620. i

'momes u. SEELY, or'aos'roN, MASSACHUSETTS, assIGNon, nr Masern assrenmrrs,

TOUNITED SHOE MACHINERY CORPORATION, 0F PATEBSON, NEW

POMTION 0F NEW JERSEY.

wazprnnnan SHOE-SEWING MAGHINE. i

To all whom t may concern.'

-Be it known that I, THOMAS' H. SEELY, a citizen of the United States, residin at Dorchester, Boston, in the county of uffolk and State of Massachusetts, have invented certain new and useful -Improvements in Wax-Thread Shoe-Sewing- Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such .as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to Wax thread shoe sewing machines employing acurved hook needle and a loo er.

In Wax threa sewing machinesit is desirable that the thread be kept hot right up to the sewing point, in order that the wax which has been applied to the thread may be in the pro er condition at the timel that the thread is incorporated into theseam. The object of the invention is to provide -shoe sewing machines with heating devices for transmltting heat tothe looper which will enable the looper to be heated to a greater degree and maintained at a more nearly uniform temperature than in ma-` chines heretofore devised.

With the above object in v'iew, the invention comprises the novel and improved features of construction, arrangements and combinations of parts set forth in the following description and pointed out in the claims, the advantages of which will beg' obvious to one skilled in the art.

The present ap lication is a division of an application, erial No. 815,127, filed In the drawings illustrating a shoe sewing machine embodying theinvention in its elevation of the forwardjportion of the head of the machine, and Fig.,2 is a detail sectional `view taken substantially on the line 2--2o'f'FiL j Thema Vine illustrated in the drawings is a shoe sewing machine of the class employing acurved hook needle and devices coperating therewithto -form a chain stitch seam, and is particularly designed for weltsl and up erste the insoles of shoes, althoug with slight .chan it may be used in sewing uppers to the so es Specication of Letters Patent.

looper. The looper indicated oscillating movements to the Varm 14.

Ward and rearward movements are imparted Patented Jael-1.1:

"if: of md Shoes The curved hok "nette indicated aty 2, the needle guide 4, the t'h '21 JERSEY, A coafinger 6, and the channel guide-8, area'll structed and arranged in the samemaffe, 4

and are operatedby the same mechanism@ the corresponding parts' of they finacliiiie illustrated in the patent .to Andievv'iEfpplr No. 1,108,560-dated August 2 5, 1191i.

r The looper of the machine`illustated the drawings is actuated 'in substantially'fthe 'same manner as the looperofthefmachine illustrated in the above Eppler'patent'.I In

order to enable the looper tobeheated more efficiently than in rior machines, `certain improvements have een madein the msm for supportin and actu cured bya clamping screw' .12 w `the lower end of an `arx'n 14" pi`vot`e` mediate. its ends to oseillate i n,pla;1f1e` substantially perpendicular to the lane 'of the needle u on the rforward endo] a'v slide 16,y

which slide is' arranged to 'reciprocate in a direction substantiall `parallel "-with. 'the plane of the needle. e upper end of'fthe arm` 14 is provided with a socket o rbore to receive a stud projectingfromasleeve 1 8,

which forms a bearing to reoeivelarod secured to the outer end of an' armV 22 carried by a rock shaft 24.- A second arm 26. is secured to the rock shaft 24, and carries a cam roll whichV engages a cam groove .in a cam disk mounted on the main shaft of the machine. Through the connections described the movements of the rock shaft 24 im art suitable bearings in the arms ofthe block 28 and inthe central portion of the arm 14. The bore in the shaft 30 does not extend completel through the rear endof the' Sad Shaft: all. the felfwardendof the bore is closed by a plug 32 screwed into the end of the shaft. The vchamber thus formed is connected by a coupling 34 with a pipe 36 which leads from a .steam chamber in a plate 38 forming a part of the frame of the head of the machine. The steam is conducted from the generator to the chamber in the plate 38 bymeans of an inlet pipe 40, .a passage 42 through. the frame and a pipe 44 connectingthe passage with the chamber in plate 38. The steam is led from the chamber in the lshaft by means of an outlet pipe 4G connected at its forward end with said chamber. To hold the hollow shaft 30 securely from longitudinal movement, a bracket 48 is secured to the plate 38 and is provided with a downwardly extending arm which engages a groove in the coupling-34. By providing a steam chamber in the Shaft 30 upon which the looper carrying arm is pivoted, this arm and the looper itself are heated in an efficient manner so that the waxed thread as it passes from the looper eye -is in a proper condition for forming a satisfactory tight seam.

Having explained the nature and object of the inventlon .and having specifically described a machine embodying the invention i its preferred form what isclaimed is l. A shoe sewing machine, having, in combination, stitch forming devices including a curved hook needle, a looper, means for supporting and actuating the looper to lay the thread in the `hook of the needle comprising a slide mounted to reciprocate in a direction parallel with the plane ofthe needle, a hollow shaft arranged arallel with the slide and supported"`there y, a looper carrying arm pivoted on, said shaft and connected to reciprocate with the slide, and devices for heating the hollow shaft.

2. A shoe sewing machine, having, in comn binaton, stitch forming devices including a curved hook needle, a looper, means for supporting and actuating the looper to lay the thread in the hook of the needle cornprising a slide mounted to reci recate in a direction parallel with the p ane of the needle, a longitudinally fixed hollow shaft arranged parallel with the slide and supported thereby, a looper carrying armpivoted on said shaft and connected to .reciprocate with the slide, and devices for heating the hollow shaft.

3. A wax thread sewing machine, having in combination, stitch-forming devices including a curved hook needle, a looper, a looper actuating slide, looper supporting devices mounted on the forward end of the slide to reciprocate therewith, 'and comprising a. pivoted looper lever and a loopeil heater fixed in the direction of movement of the slide and having a continuous heat conducting Contact with one of the looper supporting devices.

.4. A wax thread sewing machine, having in combination, stitch-forming devices including' a curved hook needle, a looper, a looper actuating slide, a looper lever pivotally supported on the forward end of thc slide to reciprocate therewith, and a fixed looper heater havin a continuous heat conducting contact wit i the 'hub of the looper lever.

5. A wax thread sewing machine, having, in combination, stitch forming devices including a curved hook needle, a looper, a looper lever, a hollow shaft upon which the looper lever is mounted, a slide for reciproeating the lever on the shaft, a rock shaft for oscillating the lever and devices `for heating the hollow shaft. l

THOMAS H. sEELY. 

